1 files changed, 21 insertions, 3 deletions
diff --git a/type.c b/type.c
index c5f6e65..4bff103 100644
--- a/type.c
+++ b/type.c
@@ -42,11 +42,29 @@ const struct data_type double_type = {
     .is_floating = true,
 };
 
-const struct data_type* integral_type = &long_type;
-const struct data_type* floating_type = &double_type;
-const struct data_type* character_type = &char_type;
 const struct data_type* primitive_types[] = {
     &void_type, &char_type, &short_type, &int_type, &long_type, &long_long_type,
     &float_type, &double_type,
     NULL
 };
+
+const struct type integral_type = {
+    .type = TP_DATA,
+    .data.data_type = &long_type,
+    .data.is_signed = true,
+};
+const struct type floating_type = {
+    .type = TP_DATA,
+    .data.data_type = &double_type,
+    .data.is_signed = true,
+};
+const struct type character_type = {
+    .type = TP_DATA,
+    .data.data_type = &char_type,
+    .data.is_signed = true, /* impl defined */
+};
+const struct type string_type = {
+    .type = TP_PTR,
+    .pointer.data_type = &char_type,
+    .pointer.ptr_level = 1,
+};